Sahih al-Bukhari, Book 30, Hadith 102 (In-Book) ⓘ
Narrated Yahya: Hisham said, "My father said that 'Aishah (ra) used to observe Saum (fast) on the days of Mina." His (i.e., Hisham's) father also used to observe Saum on those days.
وَقَالَ لِي مُحَمَّدُ بْنُ الْمُثَنَّى حَدَّثَنَا يَحْيَى، عَنْ هِشَامٍ، قَالَ أَخْبَرَنِي أَبِي كَانَتْ، عَائِشَةُ ـ رضى الله عنها ـ تَصُومُ أَيَّامَ مِنًى، وَكَانَ أَبُوهَا يَصُومُهَا.
also referenced under: Hadith 1996 (DarusSalam) & Volume 3, Book 31, Hadith 216 (USC-MSA)